Features High-hardness Alumina Compound: Alumina is highly resistant to corrosion and offers exceptional durability, ensuring longevity and reliability in various operating conditions. Accurate Size Holes and Easy Installation: The precise size holes and easy installation process make upgrading your Ender 3/3S/3Pro 3D printer hassle-free, saving you time and effort. Compatible with Ender 3/3S/3Pro 3D Printer: Specifically designed for Ender 3/3S/3Pro 3D printers, this kit provides essential upgrades for improved performance and functionality. Compact and Portable Design: The small size and portability of this upgrade kit make it convenient for storage and transportation, while maintaining excellent performance. Comprehensive DIY Toolset: Equipped with a complete set of tools, this kit enables DIY enthusiasts to easily operate and upgrade their 3D printers according to their preferences. Specification: Item Type: Dual Z-Axis Lead Screw Upgrade Kit Material: Alumina black Model: For Ender-3 dual z-axis motor kit Applicable Models: for Ender 3 /Ender 3S/Ender 3pro The Packing List Includes: 1 set of double Z-axis screw upgrade kit Package List: 1 x Stepping Motor 1 x Line 1 x Coupling 4 x Wrench 13 x Screw 10 x Accessories 2 x Pole 5 x Components 2 x Small Washer Package List 1 x Stepping Motor 1 x Line 1 x Coupling 4 x Wrench 13 x Screw 10 x Accessories 2 x Pole 5 x Components 2 x Small Washer